Linda Line was the brand name of Lindaliini AS, an Estonian ferry company operating between Tallinn, Estonia and Helsinki, Finland.

It started operations with a fleet of three hydrofoils, which were able to make the journey between Tallinn and Helsinki in an hour and a half, much faster than the conventional ferries serving the same route.

[3] In 2008, Linda Line planned to purchase a trimaran-type vessel for the Tallinn–Helsinki route, intended to replace hydrofoil Jaanika.

The launch was initially planned for April 2009, but this was soon postponed to June 26, and the purchase was ultimately not completed for unknown reasons.

Linda Line started the 2009 season with two catamarans, Merilin and the newly acquired Karolin.